-23.85% is the change from 218 to 166
Calculation steps:
[( 166 - 218 ) ÷ 218] x 100 = -23.85%
Formula
Percentage change = [(166 - 218) / 218] x 100
Subtract the new number by the original number
166 - 218 = -52
-52 ÷ 218 = -0.23853211009174313
-0.23853211009174313 x 100 = -23.85%