260.53% is the change from 266 to 959
Calculation steps:
[( 959 - 266 ) ÷ 266] x 100 = 260.53%
Formula
Percentage change = [(959 - 266) / 266] x 100
Subtract the new number by the original number
959 - 266 = 693
693 ÷ 266 = 2.6052631578947367
2.6052631578947367 x 100 = 260.53%