notations:
Score for the person: N1, N2...,N100;
Skills: X1, X2..., Xn With values in the range: 1 to n
Percentage for skill: P1,1, P1,2...P1,n; with values in the range 0 to 100; for one person;
The evaluation formula person:
N1=X1 * P1,1 + X2 * P1,2 +...+Xn * P1,n
N2 = X1 * P2,1 + X2 * P2,2+...+Xn* P2,n
.
.
N100= X1 * P100,1 + X2 * P100,2+...+Xn * P100,n
At the end we sort Value for N