87.3% is the change from 315 to 590
Calculation steps:
[( 590 - 315 ) ÷ 315] x 100 = 87.3%
Formula
Percentage change = [(590 - 315) / 315] x 100
Subtract the new number by the original number
590 - 315 = 275
275 ÷ 315 = 0.873015873015873
0.873015873015873 x 100 = 87.3%