320% is the change from 70 to 294
Calculation steps:
[( 294 - 70 ) ÷ 70] x 100 = 320%
Formula
Percentage change = [(294 - 70) / 70] x 100
Subtract the new number by the original number
294 - 70 = 224
224 ÷ 70 = 3.2
3.2 x 100 = 320%
Example