171.52% is the change from 302 to 820
Calculation steps:
[( 820 - 302 ) ÷ 302] x 100 = 171.52%
Formula
Percentage change = [(820 - 302) / 302] x 100
Subtract the new number by the original number
820 - 302 = 518
518 ÷ 302 = 1.7152317880794703
1.7152317880794703 x 100 = 171.52%