-85.52% is the change from 511 to 74
Calculation steps:
[( 74 - 511 ) ÷ 511] x 100 = -85.52%
Formula
Percentage change = [(74 - 511) / 511] x 100
Subtract the new number by the original number
74 - 511 = -437
-437 ÷ 511 = -0.8551859099804305
-0.8551859099804305 x 100 = -85.52%