-50.74% is the change from 337 to 166
Calculation steps:
[( 166 - 337 ) ÷ 337] x 100 = -50.74%
Formula
Percentage change = [(166 - 337) / 337] x 100
Subtract the new number by the original number
166 - 337 = -171
-171 ÷ 337 = -0.5074183976261127
-0.5074183976261127 x 100 = -50.74%