-95.1% is the change from 429 to 21
Calculation steps:
[( 21 - 429 ) ÷ 429] x 100 = -95.1%
Formula
Percentage change = [(21 - 429) / 429] x 100
Subtract the new number by the original number
21 - 429 = -408
-408 ÷ 429 = -0.951048951048951
-0.951048951048951 x 100 = -95.1%