97.76% is the change from 312 to 617
Calculation steps:
[( 617 - 312 ) ÷ 312] x 100 = 97.76%
Formula
Percentage change = [(617 - 312) / 312] x 100
Subtract the new number by the original number
617 - 312 = 305
305 ÷ 312 = 0.9775641025641025
0.9775641025641025 x 100 = 97.76%