-19.57% is the change from 838 to 674
Calculation steps:
[( 674 - 838 ) ÷ 838] x 100 = -19.57%
Formula
Percentage change = [(674 - 838) / 838] x 100
Subtract the new number by the original number
674 - 838 = -164
-164 ÷ 838 = -0.1957040572792363
-0.1957040572792363 x 100 = -19.57%