20.63% is the change from 315 to 380
Calculation steps:
[( 380 - 315 ) ÷ 315] x 100 = 20.63%
Formula
Percentage change = [(380 - 315) / 315] x 100
Subtract the new number by the original number
380 - 315 = 65
65 ÷ 315 = 0.20634920634920634
0.20634920634920634 x 100 = 20.63%