-50.45% is the change from 335 to 166
Calculation steps:
[( 166 - 335 ) ÷ 335] x 100 = -50.45%
Formula
Percentage change = [(166 - 335) / 335] x 100
Subtract the new number by the original number
166 - 335 = -169
-169 ÷ 335 = -0.5044776119402985
-0.5044776119402985 x 100 = -50.45%