-65.6% is the change from 747 to 257
Calculation steps:
[( 257 - 747 ) ÷ 747] x 100 = -65.6%
Formula
Percentage change = [(257 - 747) / 747] x 100
Subtract the new number by the original number
257 - 747 = -490
-490 ÷ 747 = -0.6559571619812584
-0.6559571619812584 x 100 = -65.6%