294.12% is the change from 102 to 402
Calculation steps:
[( 402 - 102 ) ÷ 102] x 100 = 294.12%
Formula
Percentage change = [(402 - 102) / 102] x 100
Subtract the new number by the original number
402 - 102 = 300
300 ÷ 102 = 2.9411764705882355
2.9411764705882355 x 100 = 294.12%