166.03% is the change from 315 to 838
Calculation steps:
[( 838 - 315 ) ÷ 315] x 100 = 166.03%
Formula
Percentage change = [(838 - 315) / 315] x 100
Subtract the new number by the original number
838 - 315 = 523
523 ÷ 315 = 1.6603174603174604
1.6603174603174604 x 100 = 166.03%