-23.29% is the change from 511 to 392
Calculation steps:
[( 392 - 511 ) ÷ 511] x 100 = -23.29%
Formula
Percentage change = [(392 - 511) / 511] x 100
Subtract the new number by the original number
392 - 511 = -119
-119 ÷ 511 = -0.2328767123287671
-0.2328767123287671 x 100 = -23.29%