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78 / 100 = 78%

4 / 10 = (4×10) / (10×10) = 40 / 100 = 40%

3 / 5 = (3×20) / ( 5×20) = 60 / 100 = 60&

3 / 4 = (3×25) / (4×25) = 75 / 100 = 75%

29 / 50 = (2×29) / (2×50) = 58 / 100 = 58%

17 / 25 = (4×17) / 4×25) = 68 / 100 = 68%

15 / 300 = (15÷3) / (300÷3) = 5 / 100 = 5%

8 / 8 = 1 = 10 / 10 = 100 / 100 = 100%.