76.6% is the change from 312 to 551
Calculation steps:
[( 551 - 312 ) ÷ 312] x 100 = 76.6%
Formula
Percentage change = [(551 - 312) / 312] x 100
Subtract the new number by the original number
551 - 312 = 239
239 ÷ 312 = 0.7660256410256411
0.7660256410256411 x 100 = 76.6%