-19.3% is the change from 342 to 276
Calculation steps:
[( 276 - 342 ) ÷ 342] x 100 = -19.3%
Formula
Percentage change = [(276 - 342) / 342] x 100
Subtract the new number by the original number
276 - 342 = -66
-66 ÷ 342 = -0.19298245614035087
-0.19298245614035087 x 100 = -19.3%