-90.43% is the change from 188 to 18
Calculation steps:
[( 18 - 188 ) ÷ 188] x 100 = -90.43%
Formula
Percentage change = [(18 - 188) / 188] x 100
Subtract the new number by the original number
18 - 188 = -170
-170 ÷ 188 = -0.9042553191489362
-0.9042553191489362 x 100 = -90.43%