-30.69% is the change from 277 to 192
Calculation steps:
[( 192 - 277 ) ÷ 277] x 100 = -30.69%
Formula
Percentage change = [(192 - 277) / 277] x 100
Subtract the new number by the original number
192 - 277 = -85
-85 ÷ 277 = -0.30685920577617326
-0.30685920577617326 x 100 = -30.69%