The number of Physics books printed by the shopkeeper in 2019 = 6600
The number of Chemistry books printed by the shopkeeper in 2019 = 4200
The number of Biology books printed by the shopkeeper in 2019 = 4200 * 3/2 = 6300
Similarly, calculating the remaining data:
| Physics | Chemistry | Biology |
2019 | 6600 | 4200 | 6300 |
2020 | 7800 | 7500 | 11250 |
2021 | 5400 | 3600 | 5400 |
2022 | 10200 | 6000 | 9000 |
2023 | 6000 | 5100 | 7650 |
The number of books of Biology subject printed in 2020 = 112500
The number of books of Physics subject printed in 2021 = 5400
So, required percentage = (112500 - 5400)/5400 * 100 = 108.33%