-35.71% is the change from 84 to 54
Calculation steps:
[( 54 - 84 ) ÷ 84] x 100 = -35.71%
Formula
Percentage change = [(54 - 84) / 84] x 100
Subtract the new number by the original number
54 - 84 = -30
-30 ÷ 84 = -0.35714285714285715
-0.35714285714285715 x 100 = -35.71%