占比

Business/news abbreviation of 所占的比例 (the proportion something accounts for). Use as a noun — 营收占比 'revenue share,' 占比上升 'share is rising.' Compare 占有率 zhànyǒulǜ 'market/possession rate' (more formal market-share term) and 比重 bǐzhòng 'weight / proportion' (more abstract/statistical).

mistakes

Don't confuse 占比 (a noun = the share itself) with the verbal 占 'to occupy/take up.' 占比 is what you read off a chart; 新能源汽车占百分之三十 uses the verb instead.