-83.46% is the change from 635 to 105
Calculation steps:
[( 105 - 635 ) ÷ 635] x 100 = -83.46%
Formula
Percentage change = [(105 - 635) / 635] x 100
Subtract the new number by the original number
105 - 635 = -530
-530 ÷ 635 = -0.8346456692913385
-0.8346456692913385 x 100 = -83.46%