Percentage Increase Formula

Steps:

• Find the difference: 1.5% - 0.2% = 1.3%.
• Divide difference by initial value: 1.3% / 0.2% = 6.5.
• Multiply by 100: 6.5 × 100 = 650%.

Why D is correct:

• Percentage increase is defined as [(final - initial) / initial] × 100%, which equals 650%.

Why the others are wrong:

• A: Gives the absolute increase (1.3%), not relative to initial.
• B: Unrelated; no valid calculation yields 8%.
• C: Arises from (final / initial) × 100% without subtracting 100%, giving 750% total instead of increase.

Final answer: D