-18.88% is the change from 196 to 159
Calculation steps:
[( 159 - 196 ) ÷ 196] x 100 = -18.88%
Formula
Percentage change = [(159 - 196) / 196] x 100
Subtract the new number by the original number
159 - 196 = -37
-37 ÷ 196 = -0.18877551020408162
-0.18877551020408162 x 100 = -18.88%