658.33% is the change from 12 to 91
Calculation steps:
[( 91 - 12 ) ÷ 12] x 100 = 658.33%
Formula
Percentage change = [(91 - 12) / 12] x 100
Subtract the new number by the original number
91 - 12 = 79
79 ÷ 12 = 6.583333333333333
6.583333333333333 x 100 = 658.33%