61.08% is the change from 316 to 509
Calculation steps:
[( 509 - 316 ) ÷ 316] x 100 = 61.08%
Formula
Percentage change = [(509 - 316) / 316] x 100
Subtract the new number by the original number
509 - 316 = 193
193 ÷ 316 = 0.6107594936708861
0.6107594936708861 x 100 = 61.08%