-83.62% is the change from 635 to 104
Calculation steps:
[( 104 - 635 ) ÷ 635] x 100 = -83.62%
Formula
Percentage change = [(104 - 635) / 635] x 100
Subtract the new number by the original number
104 - 635 = -531
-531 ÷ 635 = -0.8362204724409449
-0.8362204724409449 x 100 = -83.62%