-40.21% is the change from 838 to 501
Calculation steps:
[( 501 - 838 ) ÷ 838] x 100 = -40.21%
Formula
Percentage change = [(501 - 838) / 838] x 100
Subtract the new number by the original number
501 - 838 = -337
-337 ÷ 838 = -0.4021479713603819
-0.4021479713603819 x 100 = -40.21%