-50.11% is the change from 435 to 217
Calculation steps:
[( 217 - 435 ) ÷ 435] x 100 = -50.11%
Formula
Percentage change = [(217 - 435) / 435] x 100
Subtract the new number by the original number
217 - 435 = -218
-218 ÷ 435 = -0.5011494252873563
-0.5011494252873563 x 100 = -50.11%