-31.59% is the change from 345 to 236
Calculation steps:
[( 236 - 345 ) ÷ 345] x 100 = -31.59%
Formula
Percentage change = [(236 - 345) / 345] x 100
Subtract the new number by the original number
236 - 345 = -109
-109 ÷ 345 = -0.3159420289855073
-0.3159420289855073 x 100 = -31.59%