-75% is the change from 216 to 54
Calculation steps:
[( 54 - 216 ) ÷ 216] x 100 = -75%
Formula
Percentage change = [(54 - 216) / 216] x 100
Subtract the new number by the original number
54 - 216 = -162
-162 ÷ 216 = -0.75
-0.75 x 100 = -75%
Example