Answer:
The answer to your question is 86%, 89% and 94%
Step-by-step explanation:
Data
first grade = 86%
second grades = 47/50
third grade = 0.89
Process
Convert all the grades to percentages
1) This grade is already as a percentage 86%
2) 47/50 x 100 = 94%
3) 0.89 x 100 = 89%
4) The correct order from least to greater is 86%, 89% and 94%