-96.63% is the change from 919 to 31
Calculation steps:
[( 31 - 919 ) ÷ 919] x 100 = -96.63%
Formula
Percentage change = [(31 - 919) / 919] x 100
Subtract the new number by the original number
31 - 919 = -888
-888 ÷ 919 = -0.9662676822633297
-0.9662676822633297 x 100 = -96.63%