-83.41% is the change from 621 to 103
Calculation steps:
[( 103 - 621 ) ÷ 621] x 100 = -83.41%
Formula
Percentage change = [(103 - 621) / 621] x 100
Subtract the new number by the original number
103 - 621 = -518
-518 ÷ 621 = -0.8341384863123994
-0.8341384863123994 x 100 = -83.41%