-27.78% is the change from 342 to 247
Calculation steps:
[( 247 - 342 ) ÷ 342] x 100 = -27.78%
Formula
Percentage change = [(247 - 342) / 342] x 100
Subtract the new number by the original number
247 - 342 = -95
-95 ÷ 342 = -0.2777777777777778
-0.2777777777777778 x 100 = -27.78%