The way you worded your question is a little unclear, so I’ll do my best to cover both possible interpretations.
Converting anything from a decimal to a percentage means dividing it by 100. Assuming your percentage is 2%, your decimal would be 0.02. If you mean your decimal is 2, your percentage would do the opposite of dividing by 100 which is multiplying by 100. Therefore if your decimal was 2, your percentage would be 200%
