-64.79% is the change from 730 to 257
Calculation steps:
[( 257 - 730 ) ÷ 730] x 100 = -64.79%
Formula
Percentage change = [(257 - 730) / 730] x 100
Subtract the new number by the original number
257 - 730 = -473
-473 ÷ 730 = -0.647945205479452
-0.647945205479452 x 100 = -64.79%