304.29% is the change from 70 to 283
Calculation steps:
[( 283 - 70 ) ÷ 70] x 100 = 304.29%
Formula
Percentage change = [(283 - 70) / 70] x 100
Subtract the new number by the original number
283 - 70 = 213
213 ÷ 70 = 3.0428571428571427
3.0428571428571427 x 100 = 304.29%