-78.92% is the change from 427 to 90
Calculation steps:
[( 90 - 427 ) ÷ 427] x 100 = -78.92%
Formula
Percentage change = [(90 - 427) / 427] x 100
Subtract the new number by the original number
90 - 427 = -337
-337 ÷ 427 = -0.7892271662763466
-0.7892271662763466 x 100 = -78.92%