4800% is the change from 7 to 343
Calculation steps:
[( 343 - 7 ) ÷ 7] x 100 = 4800%
Formula
Percentage change = [(343 - 7) / 7] x 100
Subtract the new number by the original number
343 - 7 = 336
336 ÷ 7 = 48
48 x 100 = 4800%
Example