-94.84% is the change from 407 to 21
Calculation steps:
[( 21 - 407 ) ÷ 407] x 100 = -94.84%
Formula
Percentage change = [(21 - 407) / 407] x 100
Subtract the new number by the original number
21 - 407 = -386
-386 ÷ 407 = -0.9484029484029484
-0.9484029484029484 x 100 = -94.84%