-95.34% is the change from 451 to 21
Calculation steps:
[( 21 - 451 ) ÷ 451] x 100 = -95.34%
Formula
Percentage change = [(21 - 451) / 451] x 100
Subtract the new number by the original number
21 - 451 = -430
-430 ÷ 451 = -0.9534368070953437
-0.9534368070953437 x 100 = -95.34%