438.27% is the change from 81 to 436
Calculation steps:
[( 436 - 81 ) ÷ 81] x 100 = 438.27%
Formula
Percentage change = [(436 - 81) / 81] x 100
Subtract the new number by the original number
436 - 81 = 355
355 ÷ 81 = 4.382716049382716
4.382716049382716 x 100 = 438.27%