-73.23% is the change from 960 to 257
Calculation steps:
[( 257 - 960 ) ÷ 960] x 100 = -73.23%
Formula
Percentage change = [(257 - 960) / 960] x 100
Subtract the new number by the original number
257 - 960 = -703
-703 ÷ 960 = -0.7322916666666667
-0.7322916666666667 x 100 = -73.23%