3700% is the change from 7 to 266
Calculation steps:
[( 266 - 7 ) ÷ 7] x 100 = 3700%
Formula
Percentage change = [(266 - 7) / 7] x 100
Subtract the new number by the original number
266 - 7 = 259
259 ÷ 7 = 37
37 x 100 = 3700%
Example