-73.59% is the change from 973 to 257
Calculation steps:
[( 257 - 973 ) ÷ 973] x 100 = -73.59%
Formula
Percentage change = [(257 - 973) / 973] x 100
Subtract the new number by the original number
257 - 973 = -716
-716 ÷ 973 = -0.7358684480986639
-0.7358684480986639 x 100 = -73.59%