-42.47% is the change from 511 to 294
Calculation steps:
[( 294 - 511 ) ÷ 511] x 100 = -42.47%
Formula
Percentage change = [(294 - 511) / 511] x 100
Subtract the new number by the original number
294 - 511 = -217
-217 ÷ 511 = -0.4246575342465753
-0.4246575342465753 x 100 = -42.47%