Value of stock decreased by 21%. What percent in value would the stocks have to rise to return to the value they were before the crash

100/79% or abt 126.5% is the increase so it rises 26.5%

Step-by-step explanation:

100% is the original price

so 100 - 21 = 79

that means it's now 79% of what it was

so multiply by 100/79% to find what you have to multiply by to get the original price

this is 126.5%

the original was 100% so the increase is 126.5 - 100 is 26.5%, your final answer