-54.13% is the change from 218 to 100
Calculation steps:
[( 100 - 218 ) ÷ 218] x 100 = -54.13%
Formula
Percentage change = [(100 - 218) / 218] x 100
Subtract the new number by the original number
100 - 218 = -118
-118 ÷ 218 = -0.5412844036697247
-0.5412844036697247 x 100 = -54.13%