60.32% is the change from 315 to 505
Calculation steps:
[( 505 - 315 ) ÷ 315] x 100 = 60.32%
Formula
Percentage change = [(505 - 315) / 315] x 100
Subtract the new number by the original number
505 - 315 = 190
190 ÷ 315 = 0.6031746031746031
0.6031746031746031 x 100 = 60.32%