-83.52% is the change from 637 to 105
Calculation steps:
[( 105 - 637 ) ÷ 637] x 100 = -83.52%
Formula
Percentage change = [(105 - 637) / 637] x 100
Subtract the new number by the original number
105 - 637 = -532
-532 ÷ 637 = -0.8351648351648352
-0.8351648351648352 x 100 = -83.52%