Question

for your customer survey project you have successfully interviewed 90% of the customers per month this month you had 500 customers you have interviewed 430 customer so far have you met your goal

Answer 1

My guess is that the requirement is 90% of the customers, so:
First we convert 430/500 into a percentage, or decimal:
Both sides are divisible by 5, so:
86/100
That is 86%. You have not met your goal