700% is the change from 32 to 256
Calculation steps:
[( 256 - 32 ) ÷ 32] x 100 = 700%
Formula
Percentage change = [(256 - 32) / 32] x 100
Subtract the new number by the original number
256 - 32 = 224
224 ÷ 32 = 7
7 x 100 = 700%
Example