256.77% is the change from 266 to 949
Calculation steps:
[( 949 - 266 ) ÷ 266] x 100 = 256.77%
Formula
Percentage change = [(949 - 266) / 266] x 100
Subtract the new number by the original number
949 - 266 = 683
683 ÷ 266 = 2.5676691729323307
2.5676691729323307 x 100 = 256.77%