-34% is the change from 50 to 33
Calculation steps:
[( 33 - 50 ) ÷ 50] x 100 = -34%
Formula
Percentage change = [(33 - 50) / 50] x 100
Subtract the new number by the original number
33 - 50 = -17
-17 ÷ 50 = -0.34
-0.34 x 100 = -34%
Example