-64% is the change from 75 to 27
Calculation steps:
[( 27 - 75 ) ÷ 75] x 100 = -64%
Formula
Percentage change = [(27 - 75) / 75] x 100
Subtract the new number by the original number
27 - 75 = -48
-48 ÷ 75 = -0.64
-0.64 x 100 = -64%
Example