-56.19% is the change from 331 to 145
Calculation steps:
[( 145 - 331 ) ÷ 331] x 100 = -56.19%
Formula
Percentage change = [(145 - 331) / 331] x 100
Subtract the new number by the original number
145 - 331 = -186
-186 ÷ 331 = -0.5619335347432024
-0.5619335347432024 x 100 = -56.19%