3157.14% is the change from 7 to 228
Calculation steps:
[( 228 - 7 ) ÷ 7] x 100 = 3157.14%
Formula
Percentage change = [(228 - 7) / 7] x 100
Subtract the new number by the original number
228 - 7 = 221
221 ÷ 7 = 31.571428571428573
31.571428571428573 x 100 = 3157.14%