-19.59% is the change from 342 to 275
Calculation steps:
[( 275 - 342 ) ÷ 342] x 100 = -19.59%
Formula
Percentage change = [(275 - 342) / 342] x 100
Subtract the new number by the original number
275 - 342 = -67
-67 ÷ 342 = -0.195906432748538
-0.195906432748538 x 100 = -19.59%