-29.23% is the change from 910 to 644
Calculation steps:
[( 644 - 910 ) ÷ 910] x 100 = -29.23%
Formula
Percentage change = [(644 - 910) / 910] x 100
Subtract the new number by the original number
644 - 910 = -266
-266 ÷ 910 = -0.2923076923076923
-0.2923076923076923 x 100 = -29.23%