21.07% is the change from 261 to 316
Calculation steps:
[( 316 - 261 ) ÷ 261] x 100 = 21.07%
Formula
Percentage change = [(316 - 261) / 261] x 100
Subtract the new number by the original number
316 - 261 = 55
55 ÷ 261 = 0.210727969348659
0.210727969348659 x 100 = 21.07%