-96.7% is the change from 938 to 31
Calculation steps:
[( 31 - 938 ) ÷ 938] x 100 = -96.7%
Formula
Percentage change = [(31 - 938) / 938] x 100
Subtract the new number by the original number
31 - 938 = -907
-907 ÷ 938 = -0.9669509594882729
-0.9669509594882729 x 100 = -96.7%