-83.67% is the change from 637 to 104
Calculation steps:
[( 104 - 637 ) ÷ 637] x 100 = -83.67%
Formula
Percentage change = [(104 - 637) / 637] x 100
Subtract the new number by the original number
104 - 637 = -533
-533 ÷ 637 = -0.8367346938775511
-0.8367346938775511 x 100 = -83.67%