Hello There!
"Percent" means "per 100" or "over 100". To convert 121% to a decimal rewrite 121 percent in terms of per 100 or over 100.
121% = 121 over 100 or,
121% = [tex]\frac{121}{100}[/tex]
121 ÷ 100 = 1.21
Therefore, we have shown that...
121% = 1.21
