-83.44% is the change from 634 to 105
Calculation steps:
[( 105 - 634 ) ÷ 634] x 100 = -83.44%
Formula
Percentage change = [(105 - 634) / 634] x 100
Subtract the new number by the original number
105 - 634 = -529
-529 ÷ 634 = -0.8343848580441641
-0.8343848580441641 x 100 = -83.44%