-30.58% is the change from 278 to 193
Calculation steps:
[( 193 - 278 ) ÷ 278] x 100 = -30.58%
Formula
Percentage change = [(193 - 278) / 278] x 100
Subtract the new number by the original number
193 - 278 = -85
-85 ÷ 278 = -0.3057553956834532
-0.3057553956834532 x 100 = -30.58%