540.63% is the change from 128 to 820
Calculation steps:
[( 820 - 128 ) ÷ 128] x 100 = 540.63%
Formula
Percentage change = [(820 - 128) / 128] x 100
Subtract the new number by the original number
820 - 128 = 692
692 ÷ 128 = 5.40625
5.40625 x 100 = 540.63%