-10.82% is the change from 342 to 305
Calculation steps:
[( 305 - 342 ) ÷ 342] x 100 = -10.82%
Formula
Percentage change = [(305 - 342) / 342] x 100
Subtract the new number by the original number
305 - 342 = -37
-37 ÷ 342 = -0.10818713450292397
-0.10818713450292397 x 100 = -10.82%