33.99% is the change from 612 to 820
Calculation steps:
[( 820 - 612 ) ÷ 612] x 100 = 33.99%
Formula
Percentage change = [(820 - 612) / 612] x 100
Subtract the new number by the original number
820 - 612 = 208
208 ÷ 612 = 0.33986928104575165
0.33986928104575165 x 100 = 33.99%