-34.52% is the change from 84 to 55
Calculation steps:
[( 55 - 84 ) ÷ 84] x 100 = -34.52%
Formula
Percentage change = [(55 - 84) / 84] x 100
Subtract the new number by the original number
55 - 84 = -29
-29 ÷ 84 = -0.34523809523809523
-0.34523809523809523 x 100 = -34.52%