-27.12% is the change from 907 to 661
Calculation steps:
[( 661 - 907 ) ÷ 907] x 100 = -27.12%
Formula
Percentage change = [(661 - 907) / 907] x 100
Subtract the new number by the original number
661 - 907 = -246
-246 ÷ 907 = -0.27122381477398017
-0.27122381477398017 x 100 = -27.12%