3471.43% is the change from 7 to 250
Calculation steps:
[( 250 - 7 ) ÷ 7] x 100 = 3471.43%
Formula
Percentage change = [(250 - 7) / 7] x 100
Subtract the new number by the original number
250 - 7 = 243
243 ÷ 7 = 34.714285714285715
34.714285714285715 x 100 = 3471.43%