0.76% is the change from 661 to 666
Calculation steps:
[( 666 - 661 ) ÷ 661] x 100 = 0.76%
Formula
Percentage change = [(666 - 661) / 661] x 100
Subtract the new number by the original number
666 - 661 = 5
5 ÷ 661 = 0.007564296520423601
0.007564296520423601 x 100 = 0.76%