-95.7% is the change from 488 to 21
Calculation steps:
[( 21 - 488 ) ÷ 488] x 100 = -95.7%
Formula
Percentage change = [(21 - 488) / 488] x 100
Subtract the new number by the original number
21 - 488 = -467
-467 ÷ 488 = -0.9569672131147541
-0.9569672131147541 x 100 = -95.7%