-50.96% is the change from 675 to 331
Calculation steps:
[( 331 - 675 ) ÷ 675] x 100 = -50.96%
Formula
Percentage change = [(331 - 675) / 675] x 100
Subtract the new number by the original number
331 - 675 = -344
-344 ÷ 675 = -0.5096296296296297
-0.5096296296296297 x 100 = -50.96%