-73.2% is the change from 959 to 257
Calculation steps:
[( 257 - 959 ) ÷ 959] x 100 = -73.2%
Formula
Percentage change = [(257 - 959) / 959] x 100
Subtract the new number by the original number
257 - 959 = -702
-702 ÷ 959 = -0.7320125130344108
-0.7320125130344108 x 100 = -73.2%