73.72% is the change from 293 to 509
Calculation steps:
[( 509 - 293 ) ÷ 293] x 100 = 73.72%
Formula
Percentage change = [(509 - 293) / 293] x 100
Subtract the new number by the original number
509 - 293 = 216
216 ÷ 293 = 0.7372013651877133
0.7372013651877133 x 100 = 73.72%