121.62% is the change from 370 to 820
Calculation steps:
[( 820 - 370 ) ÷ 370] x 100 = 121.62%
Formula
Percentage change = [(820 - 370) / 370] x 100
Subtract the new number by the original number
820 - 370 = 450
450 ÷ 370 = 1.2162162162162162
1.2162162162162162 x 100 = 121.62%