-83.98% is the change from 543 to 87
Calculation steps:
[( 87 - 543 ) ÷ 543] x 100 = -83.98%
Formula
Percentage change = [(87 - 543) / 543] x 100
Subtract the new number by the original number
87 - 543 = -456
-456 ÷ 543 = -0.8397790055248618
-0.8397790055248618 x 100 = -83.98%