def lower_price_channel(data, period, lower_percent):
catch_errors.check_for_period_error(data, period)<EOL>emas = ema(data, period)<EOL>lower_channel = [val * (<NUM_LIT:1>-float(lower_percent)/<NUM_LIT:100>) for val in emas]<EOL>return lower_channel<EOL>
Lower Price Channel.

Formula:
lpc = EMA(t) * (1 - lower_percent / 100)