-21.36% is the change from 838 to 659
Calculation steps:
[( 659 - 838 ) ÷ 838] x 100 = -21.36%
Formula
Percentage change = [(659 - 838) / 838] x 100
Subtract the new number by the original number
659 - 838 = -179
-179 ÷ 838 = -0.21360381861575178
-0.21360381861575178 x 100 = -21.36%