-18.89% is the change from 794 to 644
Calculation steps:
[( 644 - 794 ) ÷ 794] x 100 = -18.89%
Formula
Percentage change = [(644 - 794) / 794] x 100
Subtract the new number by the original number
644 - 794 = -150
-150 ÷ 794 = -0.1889168765743073
-0.1889168765743073 x 100 = -18.89%