-38.55% is the change from 511 to 314
Calculation steps:
[( 314 - 511 ) ÷ 511] x 100 = -38.55%
Formula
Percentage change = [(314 - 511) / 511] x 100
Subtract the new number by the original number
314 - 511 = -197
-197 ÷ 511 = -0.38551859099804303
-0.38551859099804303 x 100 = -38.55%