-73.4% is the change from 500 to 133
Calculation steps:
[( 133 - 500 ) ÷ 500] x 100 = -73.4%
Formula
Percentage change = [(133 - 500) / 500] x 100
Subtract the new number by the original number
133 - 500 = -367
-367 ÷ 500 = -0.734
-0.734 x 100 = -73.4%