427.4% is the change from 146 to 770
Calculation steps:
[( 770 - 146 ) ÷ 146] x 100 = 427.4%
Formula
Percentage change = [(770 - 146) / 146] x 100
Subtract the new number by the original number
770 - 146 = 624
624 ÷ 146 = 4.273972602739726
4.273972602739726 x 100 = 427.4%