-66.23% is the change from 906 to 306
Calculation steps:
[( 306 - 906 ) ÷ 906] x 100 = -66.23%
Formula
Percentage change = [(306 - 906) / 906] x 100
Subtract the new number by the original number
306 - 906 = -600
-600 ÷ 906 = -0.6622516556291391
-0.6622516556291391 x 100 = -66.23%