indicator("example")
btc = request.security("INDEX:BTCUSD", "D",close)
sol = request.security("CRYPTO:SOLUSD", "D", close)
btcPriceChange = btc - btc[90]
solPriceChange = sol - sol[90]
btcPercentageChange = ( btcPriceChange / btc[90] ) * 100
solPercentageChange = ( solPriceChange / sol[90] ) * 100
AveragePercentChange = math.avg(btcPercentageChange,solPercentageChange)
plot(AveragePercentChange)