Find the original value
Find the new value
Subtract the new value from the original value
Divide the difference by the original value
Multiply the result by 100
Percentage reduction = ((Original value – New value) ÷ Original value) × 100
Find the original value
Find the new value
Subtract the new value from the original value
Divide the difference by the original value
Multiply the result by 100
Percentage reduction = ((Original value – New value) ÷ Original value) × 100