-97.78% is the change from 948 to 21
Calculation steps:
[( 21 - 948 ) ÷ 948] x 100 = -97.78%
Formula
Percentage change = [(21 - 948) / 948] x 100
Subtract the new number by the original number
21 - 948 = -927
-927 ÷ 948 = -0.9778481012658228
-0.9778481012658228 x 100 = -97.78%