-47.75% is the change from 511 to 267
Calculation steps:
[( 267 - 511 ) ÷ 511] x 100 = -47.75%
Formula
Percentage change = [(267 - 511) / 511] x 100
Subtract the new number by the original number
267 - 511 = -244
-244 ÷ 511 = -0.4774951076320939
-0.4774951076320939 x 100 = -47.75%