83.49% is the change from 315 to 578
Calculation steps:
[( 578 - 315 ) ÷ 315] x 100 = 83.49%
Formula
Percentage change = [(578 - 315) / 315] x 100
Subtract the new number by the original number
578 - 315 = 263
263 ÷ 315 = 0.834920634920635
0.834920634920635 x 100 = 83.49%