-47.55% is the change from 511 to 268
Calculation steps:
[( 268 - 511 ) ÷ 511] x 100 = -47.55%
Formula
Percentage change = [(268 - 511) / 511] x 100
Subtract the new number by the original number
268 - 511 = -243
-243 ÷ 511 = -0.4755381604696673
-0.4755381604696673 x 100 = -47.55%