-71.78% is the change from 907 to 256
Calculation steps:
[( 256 - 907 ) ÷ 907] x 100 = -71.78%
Formula
Percentage change = [(256 - 907) / 907] x 100
Subtract the new number by the original number
256 - 907 = -651
-651 ÷ 907 = -0.7177508269018743
-0.7177508269018743 x 100 = -71.78%