-38.72% is the change from 266 to 163
Calculation steps:
[( 163 - 266 ) ÷ 266] x 100 = -38.72%
Formula
Percentage change = [(163 - 266) / 266] x 100
Subtract the new number by the original number
163 - 266 = -103
-103 ÷ 266 = -0.38721804511278196
-0.38721804511278196 x 100 = -38.72%