48.12% is the change from 266 to 394
Calculation steps:
[( 394 - 266 ) ÷ 266] x 100 = 48.12%
Formula
Percentage change = [(394 - 266) / 266] x 100
Subtract the new number by the original number
394 - 266 = 128
128 ÷ 266 = 0.48120300751879697
0.48120300751879697 x 100 = 48.12%