-69.84% is the change from 620 to 187
Calculation steps:
[( 187 - 620 ) ÷ 620] x 100 = -69.84%
Formula
Percentage change = [(187 - 620) / 620] x 100
Subtract the new number by the original number
187 - 620 = -433
-433 ÷ 620 = -0.6983870967741935
-0.6983870967741935 x 100 = -69.84%