This percentage trick is so easy - and you should know it if you are a regular here!
Forgotten it? That's OK...youtube and tecmath has your back - with this, the easiest way to work out percentages of an amount.
To donate to the tecmath channel:https://paypal.me/tecmath
To support tecmath on Patreon: https://www.patreon.com/tecmath
To buy tecmath mechandise: teespring.com/stores/tecmath-store
More percentage tricks: https://www.youtube.com/watch?v=8fG9nbVV9g4&list=PLjbxBzUM6SLn7pLTxrksJjlHoLY8aOcGk&index=7