6.78% is the change from 915 to 977
Calculation steps:
[( 977 - 915 ) ÷ 915] x 100 = 6.78%
Formula
Percentage change = [(977 - 915) / 915] x 100
Subtract the new number by the original number
977 - 915 = 62
62 ÷ 915 = 0.06775956284153005
0.06775956284153005 x 100 = 6.78%