AP EAMCET Medical 2018 Shift 1 Paper

A voltmeter having a resistance of 900 Ω is used to measure the potential difference across a 100 Ω resistor which is connected to a battery of emf 150 V and internal resistance 10 Ω. Hie percentage of decrease in the potential difference across the 100 Ω resistor when the voltmeter is connected across it is________