-37.86% is the change from 824 to 512
Calculation steps:
[( 512 - 824 ) ÷ 824] x 100 = -37.86%
Formula
Percentage change = [(512 - 824) / 824] x 100
Subtract the new number by the original number
512 - 824 = -312
-312 ÷ 824 = -0.3786407766990291
-0.3786407766990291 x 100 = -37.86%