-74.88% is the change from 215 to 54
Calculation steps:
[( 54 - 215 ) ÷ 215] x 100 = -74.88%
Formula
Percentage change = [(54 - 215) / 215] x 100
Subtract the new number by the original number
54 - 215 = -161
-161 ÷ 215 = -0.7488372093023256
-0.7488372093023256 x 100 = -74.88%