Divide 16 by 50, then multiply the result by 100:
16/50 = 0.32
0.32 x 100 = 32%
31/50 as percentage is 62%
100*13/50 = 26%
1 and 48/100ths or 1 and 24/50ths
Percentage changes are meaningless if either of the numbers (before or after the change) is negative. This is because the calculated percentage change from -56 to 16 is the same as the percentage change from +56 to -16 - even though in the first case the amount is increasing and in the second it is decreasing.
It is a 12.5% increase
0.08
2/5ths = 4/10ths = 8/20ths = 16/40ths = 20/50ths = 40/100ths
49/50 = 98%
3/50 = 6%
4/50ths
5.26
30/50 = 0.6