-50% is the change from 74 to 37
Calculation steps:
[( 37 - 74 ) ÷ 74] x 100 = -50%
Formula
Percentage change = [(37 - 74) / 74] x 100
Subtract the new number by the original number
37 - 74 = -37
-37 ÷ 74 = -0.5
-0.5 x 100 = -50%
Example