-97.05% is the change from 712 to 21
Calculation steps:
[( 21 - 712 ) ÷ 712] x 100 = -97.05%
Formula
Percentage change = [(21 - 712) / 712] x 100
Subtract the new number by the original number
21 - 712 = -691
-691 ÷ 712 = -0.9705056179775281
-0.9705056179775281 x 100 = -97.05%