% change = [(40-18) divided by 40] x 100% = 5% (decrease)
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40%% change =|original value - new value|/original value * 100%= |80 - 48|/80 * 100%= 32/80 * 100%= 0.40 * 100%= 40% (decrease)
40% increase.
A 40% increase.
% of change = [(21-15)/15] x 100%= 40% (increase)
percent is out of 100 so change 5 to 100 by multiplying by 20 then similarly the 2 x 20 = 40 Answer: 40% 2/5 = 20/50 = 40/100