APR

$$ rewardRate=\dfrac {rewardsDistributed}{Duration} $$

$$ APR=\dfrac{rewardRate * blocksPerYear * rewardTokenPriceInUSD}{totalStaked * stakeTokenPriceinUSD} *100 $$

APY

Annual Percentage Rate (APR) and Annual Percentage Yield (APY) may seem similar, but knowing the difference and how they are used will help you make better financial decisions. On plentydefi.com the APY is calculated by compounding daily. Try it yourself on https://www.aprtoapy.com/.

$$ APY=\left(\left(1+\frac{\left(\frac{APR}{100}\right)}{365}\right)^{365}-1\right)\cdot100 $$