210.37% is the change from 164 to 509
Calculation steps:
[( 509 - 164 ) ÷ 164] x 100 = 210.37%
Formula
Percentage change = [(509 - 164) / 164] x 100
Subtract the new number by the original number
509 - 164 = 345
345 ÷ 164 = 2.1036585365853657
2.1036585365853657 x 100 = 210.37%