-57.67% is the change from 730 to 309
Calculation steps:
[( 309 - 730 ) ÷ 730] x 100 = -57.67%
Formula
Percentage change = [(309 - 730) / 730] x 100
Subtract the new number by the original number
309 - 730 = -421
-421 ÷ 730 = -0.5767123287671233
-0.5767123287671233 x 100 = -57.67%