Percentage decrease from 70 to 30 is ((70 - 30)/70) x 100
= (40/70) x 100 = 4000/70 = 400/7 = 57.14%
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940 decreased by 30% = 70% [left] of 940 = 940*70/100 = 658
To decrease an amount 30 percent, multiply that amount by 0.7
21/30 x 100 = 70. Therefore, 21 is 70 percent of 30.
70% of 30= 70% * 30= 0.7 * 30= 21
30 percent of 70 dollars will be approximately $21 US dollars.