-41.37% is the change from 278 to 163
Calculation steps:
[( 163 - 278 ) ÷ 278] x 100 = -41.37%
Formula
Percentage change = [(163 - 278) / 278] x 100
Subtract the new number by the original number
163 - 278 = -115
-115 ÷ 278 = -0.4136690647482014
-0.4136690647482014 x 100 = -41.37%