-91% is the change from 511 to 46
Calculation steps:
[( 46 - 511 ) ÷ 511] x 100 = -91%
Formula
Percentage change = [(46 - 511) / 511] x 100
Subtract the new number by the original number
46 - 511 = -465
-465 ÷ 511 = -0.9099804305283757
-0.9099804305283757 x 100 = -91%