-71.62% is the change from 74 to 21
Calculation steps:
[( 21 - 74 ) ÷ 74] x 100 = -71.62%
Formula
Percentage change = [(21 - 74) / 74] x 100
Subtract the new number by the original number
21 - 74 = -53
-53 ÷ 74 = -0.7162162162162162
-0.7162162162162162 x 100 = -71.62%