20.48% is the change from 415 to 500
Calculation steps:
[( 500 - 415 ) ÷ 415] x 100 = 20.48%
Formula
Percentage change = [(500 - 415) / 415] x 100
Subtract the new number by the original number
500 - 415 = 85
85 ÷ 415 = 0.20481927710843373
0.20481927710843373 x 100 = 20.48%