-76.19% is the change from 21 to 5
Calculation steps:
[( 5 - 21 ) ÷ 21] x 100 = -76.19%
Formula
Percentage change = [(5 - 21) / 21] x 100
Subtract the new number by the original number
5 - 21 = -16
-16 ÷ 21 = -0.7619047619047619
-0.7619047619047619 x 100 = -76.19%