7700% is the change from 2 to 156
Calculation steps:
[( 156 - 2 ) ÷ 2] x 100 = 7700%
Formula
Percentage change = [(156 - 2) / 2] x 100
Subtract the new number by the original number
156 - 2 = 154
154 ÷ 2 = 77
77 x 100 = 7700%
Example