65.08% is the change from 315 to 520
Calculation steps:
[( 520 - 315 ) ÷ 315] x 100 = 65.08%
Formula
Percentage change = [(520 - 315) / 315] x 100
Subtract the new number by the original number
520 - 315 = 205
205 ÷ 315 = 0.6507936507936508
0.6507936507936508 x 100 = 65.08%