-97.46% is the change from 826 to 21
Calculation steps:
[( 21 - 826 ) ÷ 826] x 100 = -97.46%
Formula
Percentage change = [(21 - 826) / 826] x 100
Subtract the new number by the original number
21 - 826 = -805
-805 ÷ 826 = -0.9745762711864406
-0.9745762711864406 x 100 = -97.46%