-36.63% is the change from 838 to 531
Calculation steps:
[( 531 - 838 ) ÷ 838] x 100 = -36.63%
Formula
Percentage change = [(531 - 838) / 838] x 100
Subtract the new number by the original number
531 - 838 = -307
-307 ÷ 838 = -0.36634844868735084
-0.36634844868735084 x 100 = -36.63%