-68.24% is the change from 973 to 309
Calculation steps:
[( 309 - 973 ) ÷ 973] x 100 = -68.24%
Formula
Percentage change = [(309 - 973) / 973] x 100
Subtract the new number by the original number
309 - 973 = -664
-664 ÷ 973 = -0.6824254881808839
-0.6824254881808839 x 100 = -68.24%