-97.83% is the change from 644 to 14
Calculation steps:
[( 14 - 644 ) ÷ 644] x 100 = -97.83%
Formula
Percentage change = [(14 - 644) / 644] x 100
Subtract the new number by the original number
14 - 644 = -630
-630 ÷ 644 = -0.9782608695652174
-0.9782608695652174 x 100 = -97.83%