-70.55% is the change from 730 to 215
Calculation steps:
[( 215 - 730 ) ÷ 730] x 100 = -70.55%
Formula
Percentage change = [(215 - 730) / 730] x 100
Subtract the new number by the original number
215 - 730 = -515
-515 ÷ 730 = -0.7054794520547946
-0.7054794520547946 x 100 = -70.55%