-35.91% is the change from 259 to 166
Calculation steps:
[( 166 - 259 ) ÷ 259] x 100 = -35.91%
Formula
Percentage change = [(166 - 259) / 259] x 100
Subtract the new number by the original number
166 - 259 = -93
-93 ÷ 259 = -0.3590733590733591
-0.3590733590733591 x 100 = -35.91%