-24.41% is the change from 844 to 638
Calculation steps:
[( 638 - 844 ) ÷ 844] x 100 = -24.41%
Formula
Percentage change = [(638 - 844) / 844] x 100
Subtract the new number by the original number
638 - 844 = -206
-206 ÷ 844 = -0.24407582938388625
-0.24407582938388625 x 100 = -24.41%