13% is the change from 877 to 991
Calculation steps:
[( 991 - 877 ) ÷ 877] x 100 = 13%
Formula
Percentage change = [(991 - 877) / 877] x 100
Subtract the new number by the original number
991 - 877 = 114
114 ÷ 877 = 0.12998859749144812
0.12998859749144812 x 100 = 13%