78.46% is the change from 311 to 555
Calculation steps:
[( 555 - 311 ) ÷ 311] x 100 = 78.46%
Formula
Percentage change = [(555 - 311) / 311] x 100
Subtract the new number by the original number
555 - 311 = 244
244 ÷ 311 = 0.7845659163987139
0.7845659163987139 x 100 = 78.46%