-39.42% is the change from 274 to 166
Calculation steps:
[( 166 - 274 ) ÷ 274] x 100 = -39.42%
Formula
Percentage change = [(166 - 274) / 274] x 100
Subtract the new number by the original number
166 - 274 = -108
-108 ÷ 274 = -0.39416058394160586
-0.39416058394160586 x 100 = -39.42%