-33.41% is the change from 820 to 546
Calculation steps:
[( 546 - 820 ) ÷ 820] x 100 = -33.41%
Formula
Percentage change = [(546 - 820) / 820] x 100
Subtract the new number by the original number
546 - 820 = -274
-274 ÷ 820 = -0.33414634146341465
-0.33414634146341465 x 100 = -33.41%