-73.97% is the change from 511 to 133
Calculation steps:
[( 133 - 511 ) ÷ 511] x 100 = -73.97%
Formula
Percentage change = [(133 - 511) / 511] x 100
Subtract the new number by the original number
133 - 511 = -378
-378 ÷ 511 = -0.7397260273972602
-0.7397260273972602 x 100 = -73.97%