-29.69% is the change from 916 to 644
Calculation steps:
[( 644 - 916 ) ÷ 916] x 100 = -29.69%
Formula
Percentage change = [(644 - 916) / 916] x 100
Subtract the new number by the original number
644 - 916 = -272
-272 ÷ 916 = -0.29694323144104806
-0.29694323144104806 x 100 = -29.69%