-66.19% is the change from 914 to 309
Calculation steps:
[( 309 - 914 ) ÷ 914] x 100 = -66.19%
Formula
Percentage change = [(309 - 914) / 914] x 100
Subtract the new number by the original number
309 - 914 = -605
-605 ÷ 914 = -0.661925601750547
-0.661925601750547 x 100 = -66.19%