-6.85% is the change from 730 to 680
Calculation steps:
[( 680 - 730 ) ÷ 730] x 100 = -6.85%
Formula
Percentage change = [(680 - 730) / 730] x 100
Subtract the new number by the original number
680 - 730 = -50
-50 ÷ 730 = -0.0684931506849315
-0.0684931506849315 x 100 = -6.85%