-83.09% is the change from 621 to 105
Calculation steps:
[( 105 - 621 ) ÷ 621] x 100 = -83.09%
Formula
Percentage change = [(105 - 621) / 621] x 100
Subtract the new number by the original number
105 - 621 = -516
-516 ÷ 621 = -0.8309178743961353
-0.8309178743961353 x 100 = -83.09%