32.26% is the change from 620 to 820
Calculation steps:
[( 820 - 620 ) ÷ 620] x 100 = 32.26%
Formula
Percentage change = [(820 - 620) / 620] x 100
Subtract the new number by the original number
820 - 620 = 200
200 ÷ 620 = 0.3225806451612903
0.3225806451612903 x 100 = 32.26%