-96.22% is the change from 556 to 21
Calculation steps:
[( 21 - 556 ) ÷ 556] x 100 = -96.22%
Formula
Percentage change = [(21 - 556) / 556] x 100
Subtract the new number by the original number
21 - 556 = -535
-535 ÷ 556 = -0.9622302158273381
-0.9622302158273381 x 100 = -96.22%