Answer:
106%= X + 6%
divide both sides by 106
1% = 1% of X
multiply both side by 100
100% = original price.
Example
106% = £5
divide both sides by 106 to find 1%
1% = 0.04716981
multiply both sides by 100 to find original price
100 X 0.04716981 = 4.71698113
100% = 4.72
original price = £4.72