-28.89% is the change from 270 to 192
Calculation steps:
[( 192 - 270 ) ÷ 270] x 100 = -28.89%
Formula
Percentage change = [(192 - 270) / 270] x 100
Subtract the new number by the original number
192 - 270 = -78
-78 ÷ 270 = -0.28888888888888886
-0.28888888888888886 x 100 = -28.89%