-16.44% is the change from 511 to 427
Calculation steps:
[( 427 - 511 ) ÷ 511] x 100 = -16.44%
Formula
Percentage change = [(427 - 511) / 511] x 100
Subtract the new number by the original number
427 - 511 = -84
-84 ÷ 511 = -0.1643835616438356
-0.1643835616438356 x 100 = -16.44%