Is it possible to calculate how much gst, hst, and pst collected from total revenue?

Assuming an HST rate of 13% you can use this equation:

Total Revenue x 13 (HST percentage) / 113 = HST Collected

So if you have revenue of $30,000 this would be:

$30,000 x 13 / 113 = $3,451.33 HST

Thanks Jocelyn!