-97.75% is the change from 621 to 14
Calculation steps:
[( 14 - 621 ) ÷ 621] x 100 = -97.75%
Formula
Percentage change = [(14 - 621) / 621] x 100
Subtract the new number by the original number
14 - 621 = -607
-607 ÷ 621 = -0.9774557165861514
-0.9774557165861514 x 100 = -97.75%