-29.54% is the change from 914 to 644
Calculation steps:
[( 644 - 914 ) ÷ 914] x 100 = -29.54%
Formula
Percentage change = [(644 - 914) / 914] x 100
Subtract the new number by the original number
644 - 914 = -270
-270 ÷ 914 = -0.29540481400437635
-0.29540481400437635 x 100 = -29.54%