Provision for value of dimunation of value of shares

Provisions standard does not comply with standards like Income taxes, Employee benefits, Leases, Insurance contracts and Financial instruments. Also, an entity cannot provide for future losses. So, diminution means the amount of authorised capital which was cancelled during an issue. There could be factors like: 

The amount of capital raised was over-budgeted and that is why the firm had cancelled a portion or complete issue to reduce/avoid costs of capital like Ke (Equity cost of capital), Kd (Debenture cost of capital), Ki (Term loan cost of capital) and Kp (Preference Share cost of capital). 

Next, the firm anticipated lower returns and since dividends are a burden, it had cancelled its issue as there is low growth. 

The above are my assumptions and there is no excel format for it as it looks like a qualitative analysis on market conditions.