-66.56% is the change from 924 to 309
Calculation steps:
[( 309 - 924 ) ÷ 924] x 100 = -66.56%
Formula
Percentage change = [(309 - 924) / 924] x 100
Subtract the new number by the original number
309 - 924 = -615
-615 ÷ 924 = -0.6655844155844156
-0.6655844155844156 x 100 = -66.56%