-97.38% is the change from 802 to 21
Calculation steps:
[( 21 - 802 ) ÷ 802] x 100 = -97.38%
Formula
Percentage change = [(21 - 802) / 802] x 100
Subtract the new number by the original number
21 - 802 = -781
-781 ÷ 802 = -0.9738154613466334
-0.9738154613466334 x 100 = -97.38%