-83.83% is the change from 637 to 103
Calculation steps:
[( 103 - 637 ) ÷ 637] x 100 = -83.83%
Formula
Percentage change = [(103 - 637) / 637] x 100
Subtract the new number by the original number
103 - 637 = -534
-534 ÷ 637 = -0.8383045525902669
-0.8383045525902669 x 100 = -83.83%