-37.59% is the change from 838 to 523
Calculation steps:
[( 523 - 838 ) ÷ 838] x 100 = -37.59%
Formula
Percentage change = [(523 - 838) / 838] x 100
Subtract the new number by the original number
523 - 838 = -315
-315 ÷ 838 = -0.37589498806682575
-0.37589498806682575 x 100 = -37.59%