-36.05% is the change from 86 to 55
Calculation steps:
[( 55 - 86 ) ÷ 86] x 100 = -36.05%
Formula
Percentage change = [(55 - 86) / 86] x 100
Subtract the new number by the original number
55 - 86 = -31
-31 ÷ 86 = -0.36046511627906974
-0.36046511627906974 x 100 = -36.05%