-31.3% is the change from 345 to 237
Calculation steps:
[( 237 - 345 ) ÷ 345] x 100 = -31.3%
Formula
Percentage change = [(237 - 345) / 345] x 100
Subtract the new number by the original number
237 - 345 = -108
-108 ÷ 345 = -0.3130434782608696
-0.3130434782608696 x 100 = -31.3%