-97.86% is the change from 983 to 21
Calculation steps:
[( 21 - 983 ) ÷ 983] x 100 = -97.86%
Formula
Percentage change = [(21 - 983) / 983] x 100
Subtract the new number by the original number
21 - 983 = -962
-962 ÷ 983 = -0.9786368260427264
-0.9786368260427264 x 100 = -97.86%