-98.29% is the change from 644 to 11
Calculation steps:
[( 11 - 644 ) ÷ 644] x 100 = -98.29%
Formula
Percentage change = [(11 - 644) / 644] x 100
Subtract the new number by the original number
11 - 644 = -633
-633 ÷ 644 = -0.9829192546583851
-0.9829192546583851 x 100 = -98.29%