31% is the change from 500 to 655
Calculation steps:
[( 655 - 500 ) ÷ 500] x 100 = 31%
Formula
Percentage change = [(655 - 500) / 500] x 100
Subtract the new number by the original number
655 - 500 = 155
155 ÷ 500 = 0.31
0.31 x 100 = 31%
Example