161.94% is the change from 310 to 812
Calculation steps:
[( 812 - 310 ) ÷ 310] x 100 = 161.94%
Formula
Percentage change = [(812 - 310) / 310] x 100
Subtract the new number by the original number
812 - 310 = 502
502 ÷ 310 = 1.6193548387096774
1.6193548387096774 x 100 = 161.94%