-31.24% is the change from 445 to 306
Calculation steps:
[( 306 - 445 ) ÷ 445] x 100 = -31.24%
Formula
Percentage change = [(306 - 445) / 445] x 100
Subtract the new number by the original number
306 - 445 = -139
-139 ÷ 445 = -0.31235955056179776
-0.31235955056179776 x 100 = -31.24%