-97.77% is the change from 943 to 21
Calculation steps:
[( 21 - 943 ) ÷ 943] x 100 = -97.77%
Formula
Percentage change = [(21 - 943) / 943] x 100
Subtract the new number by the original number
21 - 943 = -922
-922 ÷ 943 = -0.9777306468716861
-0.9777306468716861 x 100 = -97.77%