-18.4% is the change from 511 to 417
Calculation steps:
[( 417 - 511 ) ÷ 511] x 100 = -18.4%
Formula
Percentage change = [(417 - 511) / 511] x 100
Subtract the new number by the original number
417 - 511 = -94
-94 ÷ 511 = -0.18395303326810175
-0.18395303326810175 x 100 = -18.4%