-78.24% is the change from 556 to 121
Calculation steps:
[( 121 - 556 ) ÷ 556] x 100 = -78.24%
Formula
Percentage change = [(121 - 556) / 556] x 100
Subtract the new number by the original number
121 - 556 = -435
-435 ÷ 556 = -0.7823741007194245
-0.7823741007194245 x 100 = -78.24%