Calchy.
Math - percentage change

What is the percentage change from 1200 to 900?

Answer
-25.00
%
((900 − 1200) ÷ 1200) × 100 = -25.00%
How we got there
  1. 01Difference: 900 − 1200 = -300.00
  2. 02Divide by start: -300.00 ÷ 1200 = -0.2500
  3. 03Convert to %: × 100 = -25.00% (decrease)
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