-65.93% is the change from 907 to 309
Calculation steps:
[( 309 - 907 ) ÷ 907] x 100 = -65.93%
Formula
Percentage change = [(309 - 907) / 907] x 100
Subtract the new number by the original number
309 - 907 = -598
-598 ÷ 907 = -0.659316427783903
-0.659316427783903 x 100 = -65.93%