SSC CHSL 6 Aug 2021 Shift 1 Paper

According to the line graph,Percentage increase in the production in 2016
$=\frac{\left(628-600\right)}{600}\times 100=4.66\%$
Percentage increase in the production in 2017
$=\frac{\left(750-628\right)}{628}\times 100=19.43\%$
Percentage decrease in the production in 2018
$=\frac{\left(750-500\right)}{750}\times 100=33.33\%$
Percentage increase in the production of 2019
$=\frac{570-500}{500}\times 100$
$=14\%$
Hence, the percentage of maximum increase or reduction in the production is $33.33\%$ reduction in $2018.$
$\therefore$ It is maximum percentage decrease of $33.33\%$.