-49.5% is the change from 802 to 405
Calculation steps:
[( 405 - 802 ) ÷ 802] x 100 = -49.5%
Formula
Percentage change = [(405 - 802) / 802] x 100
Subtract the new number by the original number
405 - 802 = -397
-397 ÷ 802 = -0.49501246882793015
-0.49501246882793015 x 100 = -49.5%