Global Port. Attribution Analysis - Stalla explanation

to Stalla users, can you please help? So I think that Stalla does an overall good job explaining this topic but when I got to the Currency Attribution calculation I am not so sure. On page 37 Session 16 they calculate market index return in Base Currency by compounding market index return in local currency by CURRENCY RETURN CONTRIBUTION MAKRET INDEX… where do they get those numbers? (numbers 4.17% and 10.71%) I can’t figure it out, help please…