-96.17% is the change from 548 to 21
Calculation steps:
[( 21 - 548 ) ÷ 548] x 100 = -96.17%
Formula
Percentage change = [(21 - 548) / 548] x 100
Subtract the new number by the original number
21 - 548 = -527
-527 ÷ 548 = -0.9616788321167883
-0.9616788321167883 x 100 = -96.17%